Locking cap for radiators



May r A. c. LIPPERT LOCKING CAP FOR RADIATORS Filed April 5, 1924* e ma1..

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BY time: means LGGI'CING car s mucous Application filed April 5, 1924.serial mi. 704,335,"

The invention relates to automobile radi- I atorcaps andhas. for aprimary object the cap to beeasily I I I neck,i and thereafter the capis positively pre- 1 provision of means for securely and permanentlylooking a radiator-cap to aradmtor neck, said means being, e cient andcertain arts of operation and composed of few which ma economica lymanufacture The invention contemplates theprovision of an insert orinternal unit which may be supplied independentl of the main cap andwhich is acla. ted-to e interposed between the inneran outer v collarmembers of the v radiator cap when the latter. are assembled in suchmanner as to renderthe complete threaded onto afradiator vented by thesaid locking means from being removed or unscrewed from "the radiatorneck without the 'useof a special too-l.

' The characteristics of the improved looking means contemplated by theinvention are suchgthat the'same may be applied togthe inner and outercollar r'nemhers of l the radiator; cap with a minimum of alteration inthe present structure of the cooperating col lar members; now" generallyused having the same function and characteristics. I p

With such objects in view, aswell as other objects which are incident tothe use of the improvement, the invention consists m the parts and.comb'nations thereof hereinafter setforth and claimed. In order to makethe invention more clearly understood, "there are shown in theaccompanying drawings means for carrying the same into practicaleffect,- Without limiting the imflrovement's, in their usefulapplication, to t 'e particular construction w ich, for the pur use ofexplanation, has been made the su ject of illustration. I

' ..positioned upon On the drawings, w Figure 1 is a-front elevation,partially in Section, of. aradiator cap in which the inventionisfembodi-ed, the samebe'ing shown an automobile radiator;

Fig-'2 is a horizontal section on line 22 of Fig. 1;

Fig, 3 is a perspective view of. the locking .ig. 4 --;is as deelevation of the internal 'collar member or adapter.

Referring to the drawings,

be conveniently assemble andat its as adapted for locking means creasedor may centrally apertured collar I 3' which is provided at its.

illustrated in Fig. 2", are formed with a shou I --one end, the other 1indicates theradiator of an automobile having the usual screw-threadedfillingaperture 2, and '3 is an outer cap memberwhich. may. be of thewell'known bar construction and which is provided with a hinged coverlylffllfil'tllld for the reception of almof'or'rieter 5 provided I I IThe cap,.as illustrated, also 15 provided with a projection 7, w

tion. The cap 3 has a centrally apertured hub portion 13, forming an,outer depending collar member-'20. a

f inner collar member, or adapter 8 is provided which is suitablythreaded, as zit-21, lower'end for attachment to the internally threadedaperture 2 of the radiator or recess 11, the inner wa'll o collarmember. As illustrated, four of these abutments are provided in said.collar member 8. It will also-be apparent that the nummLmoIs; A coercinI hieh' i may be of keystone form and adapted toreceive any suitabledecorationyor, ornamentai to a .neck and at its upper portion theinternal f I30. be cut awayat 12" to vprovide intervals around thecircumference of the her of, abutments maybe increased ,or deing acollar member and that various changes may be; ade in the form thereofwithout epartingfromthe spiritandscope of the'im' 'eratlve charactervention, orafiect'ing the o I I I lar member 8' 15 thereof. The internalco be formed without lpe'rforatdesigned to-be loosely received withinthe portion 20 of the outer cap member 11 per end with anoverhanging'flange portion '14 against which the I u per'surface, of thegasket or packing grossed when the inner collar member has ee'n.placed-'- in positwn. The apertured collar portion of the cap 3' is'furter provided with an annular groove 25 and aplura'lity ofinternalnotches, any" desired number and which, as clearl der orprojection 16 at mom er '10 is com-- or recesses 15. of v end of saidrecess merging into ,fil e innerv wall of the annular same to besnapped-into lace "first within the annular recess 1101f .t

1e internal collar' member and then within the annular groove 25. Oneend of said split ring is offset,

or projected outwardly as at 18 and the other end is offset or rojectcdinwardly as at 19. Thefoutwardl y extending projections 18 are adaptedto'cooperate with a projection 16 in a recess 15 in the outer. collarmember and the inward projection 19 is designed to cooperate with theabutments 24 in the inner wall of the annular -recess 11 of the internalcollar'member (F ig. 2).

- In assembling the parts, the locking ring' '17 is snapped or sprunginto place Within the circumferential groove-1i of the collar Sand theringlis compressed to enable the same and, the internal collar to heslipped within the central aperture of the outer cap 8. The internalcollar is pressed into the outer cap jmember until the ring 17 snapsinto the annular groove 25 and :turned until the projection '18 engagesone of thenotched recesses 15 in the outer cap, after which the entireassembly "is enabled by this locking, engagement to be screwed onto theneck of the radiator-.. The engagement of the projection 19 with one ofthe abutments 24 and the cor-res )ondingengagement of the projection 18wlth one of the projections 16 permits the internal collar, or adapterand the outer cap member to lie-screwed into place as a single unit.Thereafter,-should it, be attempted to unscrew the cap, the re.-

cesses 15 will ridefreely over the projection 18.- There'being noresultant movement of the locking ring 17, the internal collar member8cannot be unscrewed from its threaded position on the radiator neck.- Itwill, therefore, be apparent that the locking ring 17 provides apositive and permanent lock ing meanswhich effectually "prevents theunauthorized removal of the radiator cap,

and after the cap has been screwed home,

"a special tool must be utilized to again effect the removal of'the cafrom the radiator.

' It is thought that tiie invention and many of its attendant advantageswill be understood; from the foregoing description, and

it will be-apparent that various changes may be made in the form,construction. and ary rangement of the parts without departing from;the-spirit and scope of the invention,

posite direction.

or sacrificing all of its material advantages, I the form hereinbeforedescribed being mere 1y 2.. preferred embodim nt thereolfl.

I claim:

1.,Thebombination of a collar member groove provided with an abutment, acap adapted to loosely fit over said collar meInher and having anannular groove and an internal recess arranged to oppose the an-' nulargroove in said internal collar member, and means contained in saidgrooves and cooperating with said abutment and said recess to permitrelative turning;- movement of said cap and said collar in one directiononly.

2.v The combination of an internal col-lara?! I having means forattachment to the radias 1 r tor neck and having a circumferential beingsubstantially opposite said circumferential groove when the parts areassembled,

and resilient locking I'neans dis osed in said grooves and cooperatingWith 1; 1e abutments in said circumferential groove and the shoulders insaid annular groovefor preventing relative turning movement of said capand said collar in one direction and permittingsaid member in theoprelativo movement of 3. The combination memberhaving means forattachment to a radiator neck and having a circumferential groox eprovided with a plurality of abut ments on the inner wall thereof, a capmomberadapted to loosely fit over said internal collar member and havingan annular groove and a plurality of internal recesses in said groove,said annular groove being arranged opposite the circumferential groovein said internal collar member, andresilient locking means looselyfitting of an internal collar in said annular groove and cooperatingwith said abutments and said, recesses to revent relative turningmovement of said cap member and said collar member in one direction-andpermit relative turning movement of said members in the oppositedirection.

4. The combination of an internal collar 7 12o groove, 1,

having means for attachment to a radiator neck and having acircumferential a centrally apertured' cap member an annular fit oversai internal collar annular groove being substantially opposite saidcircumferential groove when the parts are assembled, an abutment'in saidcircumferential groove, a shoulder in said annular groove, and a splitlocking rin adapted to extend into said circumferentia groove and havingroove and adapted to loosely member, said tion, one end'of said splitring being ollset I outwardly to engage the shoulder in said annulargroove, and the other end of said split ring being oflset inwardly toengage the abutment in said circumferential groove where-- bysimultaneous turning movement of' said cap and collar member ispermitted in one.

direction only.

v 5. The combination of an internal collar member having screw-threadedmeans for attachment to a radiator neck and having a circul'nfercntialgroove provided with an abutment on the inner wall thereof, a capadapted to loosely lit over said internal collar mei'nbernnd having anannular groove arranged to oppose the circumferential groove in saidinternal collar member when said ca .i and said collar member are inassemhle. relation, a shoulder in said annular groove, and a splitlocking'ring adapted to extend into said annular grooveand saidcircumferential groove and to cooperate therewith to prevent relativeaxial mov'emcnt thereof and to cooperate withfsaid abutment insaid'circumferentia'l groove and said shoulder in said annular groove toprevent relative turning movement of said cap member and saidcollarmember in one direction and permit relative turning movement ofsaid members in the cipposite direction.

6. The combination 0 an internal collar member having screw-threadedmeans i for attachment to a radiator neck and having a circumferentialgroove With an abutment formed therein, a centrally apertured cap memberhaving an annular groove disposed in said aperture and said cap beingadapted to loosely fit. over said internal collar member, said'capmember having a shoulder formed in said groove,vsaid annular groovebeing substantially o posits said circumferential groove when t e artsare'assembled, and a split locking ring iaving parts thereof disposed insaid circumferential groove and BIT annular groove, said split lockingrin hav ing. oppositely projecting ofi'set ends a aptcd to engage theshoulder of said cap member and the abutment in said annular groove ofsaid collar inembento prevent relative turn ing movement of said cap andcollar mombers in one direction and permit said relative turningmovement in the opposite direc tion. i Y

7 The combination of a collar member having means for attachment to aradiator neck and having a circumferential groove, a cap adapted toloosely fit over said collar n'iember and having an annular groovearranged to oppose the circumferential groove in said internal collarmember, a shoulder in said annular groove,- an abutment in saidcircumferential groove, and a ring seated in said oircumfercntial grooveand extending into said annular groove upon assembly tov prin'entrelative axial movement of said collar member and said cap and adaptedto 00-;

operate with said shoulder in said :capand said abutment in saidcollarto. permit rela tive turning movement thereof in one directiononly. a f 1 i 8. The combination of a collar vmember having means forattachment to a radiator neck and having a "circumferential groove,

:1. ca .7 adapted to loosely fit over said collar mom er and havinganannularlgroove ar ranged to oppose the circumferential groove in saidinternal collar member, an annulus having an'opening on the peripherythereof detents of said annulus to'prevent providing radial inwardlyand. outwardly

